I suggest you...

Support OneNote integration

OneNote is a powerful app.
Sometimes I create notes and after a while it becomes a task.
When a note in OneNote is created it would be nice to include (by using the share button) this note into a 2Day task.

I use the Desktop Version on PC and Notebook and on my mobil modern version.
Yes, I can imagine two functions.

For one, you can generate a link to the page in OneNote.
2Day should recognize and process accordingly. So do not save as a long text-monster and clicking on the link should open the correct OneNote page locally.

The other feature is a 2Day transfer task to OneNote.
But I would not use it, but more like a link in OneNote to open a task in 2Day.
So to get to 2Day and vice versa by OneNote.

This would be obsolutley nice. I mostly work in OneNote and for now i create Outlook Tasks that are synced with 2day over Exchange. This works qreat, but since i have 2day App on Windows 8 i don't really Need Outlook anymore only for syncin with one Note. If you could implement this i can uninstall Outlook and use Windows 8 right out of the box.